Particle model of matter
What Particle model of matter means in Combined Science GCSE, as defined for AQA.
Definitions of Particle model of matter
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Reference: AQA
A model that represents matter as tiny particles in constant motion, with spacing and energy explaining density, changes of state and gas pressure.
Used to explain the differences in density between the different states of matter in terms of the arrangement of atoms or molecules.
Simple diagrams use small circles or dots to represent particles and show how they are arranged in solids, liquids and gases.
The model that all substances are made of atoms, including elements, compounds and mixtures.
Topics that use Particle model of matter
- Atoms, elements and compounds (AQA GCSE)
- Density of materials (AQA GCSE)
- Key ideas (AQA GCSE)
Related terms
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